<!DOCTYPE html>
<html lang="en">
<head>
    <meta charset="UTF-8">
    <title>Title</title>
</head>
<body>
<form  action="UpdateServlet" method="get">
  <table>
    <tr>
    <tr>
      <td>用户名:</td>
      <td><input type="text" name="username" /><br /></td>
    </tr>
    <tr>
      <td>密码：</td>
      <td><input type="password" name="password" /><br /></td>
    </tr>
    <tr>
      <td><input type="submit" value="提交" /></td>
    </tr>
  </table>
</form>

</body>
</html>